define autorhythmic
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- exists and is an alternate of. Merge this question into. Split and merge into it. Answered by The Community. Making the world better, one answer at a time. Autorhythmic cells (pacemakers) refers to the cardiac muscle cells responsible for synchronizing the contractile cells to coordinate a heart contraction.
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- Arrest (Cardiac) – Cessation of the heart’s normal rhythmic electrical and/or mechanical activity which causes immediate haemodynamic compromise. Arrhythmia – Any heart rhythm that falls outside the accepted norms with respect to rate, regularity, or sequence of depolarisation.
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Heart arrhythmia Cardiac arrhythmia, also known as cardiac dysrhythmia or irregular heartbeat, is a group of conditions in which the heartbeat is irregular, too fast, or too slow. A heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia and a heart rate that is too slow – below 60 beats per minute – is called bradycardia. Many types of arrhythmia have no symptoms. When symptoms are present these may include palpitations or feeling a pause between heartbeats.
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About Arrhythmia Abnormal heart rhythms (arrhythmias). Arrhythmias are abnormal beats. The term arrhythmia refers to any change from the normal sequence of electrical impulses, causing abnormal heart rhythms. Arrhythmias may be completely harmless or life-threatening.
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Atrial Fibrillation  (AF) Atrial Fibrillation. Atrial fibrillation (A-tre-al fi-bri-LA-shun), or AF, is the most common type of arrhythmia (ah-RITH-me-ah). An arrhythmia is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. AF occurs when rapid, disorganized electrical signals cause the atria (AY-tree-uh), the two upper chambers of the heart, to fibrillate.
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- Arrhythmia: An abnormal heart rhythm. In an arrhythmia the heartbeats may be too slow, too rapid, too irregular, or too early.Rapid arrhythmias (greater than 100 beats per minute) are called tachycardias. Slow arrhythmias (slower than 60 beats per minute) are called bradycardias.Irregular heart rhythms are called fibrillations (as in atrial fibrillation and ventricular fibrillation).When a single heartbeat occurs earlier than normal, it is called a premature contraction. The term arrhythmia comes from the Greek a-, loss + rhythmos, rhythm = loss of rhythm.rrhythmia: An abnormal heart rhythm. In an arrhythmia the heartbeats may be too slow, too rapid, too irregular, or too early.
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- Arrhythmias happen when the heart’s electrical signal causes it to pump too fast or irregularly. Arrhythmias can prevent the heart from pumping enough blood to your brain and body and cause other problems, such as blood clots. Cardioversion uses medications or low-energy electrical shocks to restore a normal heartbeat. Cardioversion is usually a scheduled procedure. It is an emergency procedure done right away when symptoms are severe. Severe symptoms include dizziness, passing out, chest pain, shortness of breath, and low blood pressure. Cardioversion is only one method of treating cardiac arrhythmias.
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Supraventricular Tachycardia An arrhythmia is an abnormal heart rhythm caused by a problem in the heart's electrical system, also called the cardiac conduction system. When a child has SVT, the heart suddenly starts to beat very fast, at rates of 180 to 280 beats a minute and up to 300 beats a minute in infants.
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Heart arrhythmia Antiarrhythmic agents are pharmaceuticals used to combat cardiac arrhythmias. An arrhythmia is an abnormality of the rate or rhythm of the heartbeat, such as atrial fibrillation, atrial flutter, ventricular fibrillation and ventricular tachycardia.
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Arrhythmia Heart - definition, symptoms and treatment Arrhythmias can result from numerous causes including electrical disturbances of the heart’s pacing mechanisms, physical damage to the HEART such as might occur with HEART ATTACK, interruptions of the heart’s BLOOD supply that cause myocardial HYPOXIA (oxygen depletion), severe electrolyte imbalances, and medication side effects.
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Heart rate Bradycardia, also known as bradyarrhythmia, is a slow heart rate, namely, a resting heart rate of under 60 beats per minute (BPM) in adults.It is a type of cardiac arrhythmia. ventricular bradycardia, also known as ventricular escape rhythm or idioventricular rhythm, is a heart rate of less than 50 bpm. This is a safety mechanism when there is lack of electrical impulse or stimuli from the atrium.
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Atrial Flutter Atrial Flutter Overview. Atrial flutter is an abnormality of the heart rhythm, resulting in a rapid and sometimes irregular heartbeat. Such abnormalities, whether in the rate or regularity of the heartbeat, are known as arrhythmias. The beating of the heart is controlled by electrical impulses.
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Abnormal heart rhythms Abnormal heart rhythms. An abnormal heart rhythm – sometimes called an arrhythmia – means your heart is beating too fast, too slow, or with an irregular pattern. Your heart has an electrical system that tells it when to beat and push blood around the body.
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Arrhythmias An arrhythmia (ah-RITH-me-ah) is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. A heartbeat that is too fast is called tachycardia (TAK-ih-KAR-de-ah). A heartbeat that is too slow is called bradycardia (bray-de-KAR-de-ah). Most arrhythmias are harmless, but some can be serious or even life threatening. During an arrhythmia, the heart may not be able to pump enough blood to the body. Lack of blood flow can damage the brain, heart, and other organs.
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- Arrhythmias are abnormal heartbeats usually caused by an electrical short circuit in the heart. The heart normally beats in a consistent pattern, but an arrhythmia can make it beat too slowly, too quickly, or irregularly.
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- c. Autorhythmic cell starts out at resting membrane potential (~-60 mV), positive out, negative in. d. When the membrane potential gets to -40 millivolts, it has reached threshold for initiating an action potential. e. Potassium channels open, resulting in potassium rapidly leaving the cell. f.
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Electrical Cardioversion (Defibrillation) for a Fast Heart Rate Electrical Cardioversion (Defibrillation) for a Fast Heart Rate. Electrical cardioversion is a procedure in which a brief electric shock is given to the heart to reset the heart rhythm back to its normal, regular pattern (normal sinus rhythm). The shock is given through paddles or patches applied to the outside of the chest wall.
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fibrillation From Fenstermacher and Hudson, 1995. atrial fibrillation a reentrant cardiac arrhythmia marked by rapid randomized contractions of the atrial myocardium, causing a totally irregular rapid atrial rate. It is recognizable on an electrocardiogram by the absence of P waves and an irregular ventricular response.
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- Arrhythmia refers to any kind of abnormal heart rhythm. There are two types of arrhythmias: atrial arrhythmia, also called supraventricular arrhythmia, which begins in the upper chambers of the heart, and ventricular arrhythmia, which begins in the lower chambers of the heart.
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Heart Rhythm Problems (Arrhythmias) An arrhythmia (also called dysrhythmia) refers to what is usually an irregular heartbeat. The heart rate can be fast, slow, or irregular, taking into consideration age and activity. For example, a newborn's heart beats much faster than a 5-year-old child's heart. A fast heart rate is called tachycardia. A slow heart rate is called bradycardia. Some irregular heartbeats are normal: Sinus arrhythmia is the normal variation in heart rate that accompanies breathing in and out.
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Atrial Fibrillation (AFib) Atrial fibrillation (also referred to as AFib, Afib, A-fib, and AF) is an irregular and often rapid heart rhythm. The irregular rhythm, or arrhythmia, results from abnormal electrical impulses in the upper chambers (atria, singular=atrium) of the heart that cause the heartbeat (ventricle contraction) to be irregular and usually fast.
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Arrhythmias An arrhythmia (ah-RITH-me-ah) is a problem with the rate or rhythm of the heartbeat. During an arrhythmia, the heart can beat too fast, too slow, or with an irregular rhythm. A heartbeat that is too fast is called tachycardia (TAK-ih-KAR-de-ah). A heartbeat that is too slow is called bradycardia (bray-de-KAR-de-ah). Most arrhythmias are harmless, but some can be serious or even life threatening.
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REFLEXES FROM THE LUNGS AND CHEST WALL Sinus arrhythmia is an irregularity of the heart rate in which there is a. cyclic increase and decrease in the rate of a sinus rhythm. Typically, heart rate increases during inspiration and. decreases during expiration.
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Types of Arrhythmias A rapid heartbeat (tachycardia) is a type of cardiac arrhythmia. There are a variety of types of rapid cardiac arrhythmias: Atrial fibrillation (AF) is caused by an irregular, rapid quivering of the atria, the upper chambers of the heart.
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APC A. APC, or atrial premature complex (or beat) is a beat that arise in the atria of the heart from outside the normal mechanism of heartbeats. It's very common and doesn't portend any bad prognosis. It increase with age, smoking, coffee intake, alcohol intake, and stress, and also with heart and lung disease.
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Arrhythmias (Heart Rhythm Disorders) What is an arrhythmia (heart rhythm disorder)? Arrhythmias are abnormalities of the heartbeat. There are many types of arrhythmias, and they are classified by some researchers and doctors by where they begin in the heart (the atria, AV node, or the ventricles). Others classify arrhythmias as one of four types -- premature beats, supraventricular, ventricular, and bradyarrhythmias.